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Commitments and contingencies (Tables) | 12 Months Ended
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Dec. 31, 2012
Commitments and Contingencies Disclosure [Abstract] |
Rent Expense | Properties
Location |  | Annual Rent |  |  | Lease Expiration Date
Auburn, Washington |  | $ | 25,000 |  |  | Month to Month
Baton Rouge, Louisiana |  | $ | 27,000 |  |  | Month to Month
Champaign, Illinois |  | $ | 258,000 |  |  | 12/2014
Charlotte, North Carolina |  | $ | 61,000 |  |  | 3/2016
Hampstead, New Hampshire |  | $ | 24,000 |  |  | 8/2017
Pearl River, New York |  | $ | 105,000 |  |  | 8/2018
Pottsboro, Texas |  | $ | 18,000 |  |  | 8/2014
Stony Point, NY |  | $ | 106,000 |  |  | 6/2016
Tulsa, Oklahoma |  | $ | 26,000 |  |  | 12/2014
Summarized table of future commitments under operating leases | Future commitments under operating leases are summarized as follows:
Years ended December 31, |  | Amount |
(in thousands) |  |  |
- 2013 |  | $ | 668 |
- 2014 |  |  | 537 |
- 2015 |  |  | 238 |
- 2016 |  |  | 181 |
- 2017 |  |  | 194 |
Total |  | $ | 1,818 |

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- Definition Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717 + Details
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- Definition Tabular disclosure of rental expense from operating leases for each period for which an income statement is presented with separate amounts for minimum rentals, contingent rentals, and sublease rentals. Rental payments under leases with terms of a month or less that were not renewed need not be included. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 + Details
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